Wehre do I change the nework conection timout for TCP, normally this is about 300 sec, but for this case I need to increse this to 700 sec. This is for a SIP protocol, the ATA adapter is default on 600 sec, and this timeout as the SG560 is closing down this after 300 sec.
unless access controls are enabled, the default tcp timeout is 6 days.
if access controls are enabled, then port 80 timeout is 300 secs
you can increase this
system -> advanced -> device config -> passthroughtimeout